VA.
Niemann is Nos. He escaped Logjam at the top with a birdie 14-17 and finished Par-4 18th at Robert Trent Jones Golf Club at 15 under 198.
Nieman, 26, won in Australia, Singapore and Mexico this year. He has six career LIV wins after winning two PGA Tours.
“It’s pretty cool to be here right now,” Nieman said. “I’m pretty grateful.”
McDowell shot 66 and second round leader Rahili was 68.
Bryson Deccanbeau, who is preparing for the US open title defense at Oakmont, had a 65 in fourth place with Phil Mickelson (65) and Baba Watson (67) at 13 under.
John Rahm was under 68 years old and under 10 years old.
Dechambeau and Lahiri led Crusher to the second consecutive team title, finishing in eighth overall, with Paul Casey and Charles Howell III completing the lineup.
“We’re the beasts of the team,” Deccanbo said.
Mickelson drilled a rear tip hole from a steep slope with heavy green roughness for birdies later in his round.
“It’s one of my better things,” Mickelson said.
Dechambeau added: